Retractable shield for syringes

Surgery – Truss – Perineal

Patent

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Details

128215, A61N 512

Patent

active

041856198

ABSTRACT:
An improved shield for enclosing the body of a hypodermic syringe to protect a user against exposure from radioactive materials. The shield is formed of two elements, including an upper element having means for engaging the barrel of the syringe, and preferably formed from lightweight metallic materials such as aluminum. A second element formed of tantalum, tungsten, depleted uranium alloy or other dense material offering a high degree of radioactivity shielding is slideably disposed within the first element, and adapted to be retracted in telescopic fashion for dose calibration and subsequent return to an adjustable extended position to cover the lower end of the syringe barrel in which the radioactive contents are contained. Without modification, this syringe shield provides for the accommodation of syringes of different manufacture having different barrel diameters, effective lengths, graduation orientation and flange geometry. A novel clamp disposed at the upper end of the upper element accommodates for differing syringe diameters. Lockable clamping means on a lower element fixing the relative position between the upper and lower elements accommodates for the differing effective syringe barrel lengths.

REFERENCES:
patent: 167675 (1875-09-01), Koehler
patent: 3596659 (1971-08-01), Glasser
patent: 3655985 (1972-04-01), Brown et al.
patent: 3673411 (1972-06-01), Glasser
patent: 3769490 (1973-10-01), Czaplinski
patent: 3814941 (1974-06-01), Czaplinski
patent: 3820541 (1974-06-01), Langan
patent: 3863623 (1975-02-01), Trueblood et al.
patent: 3973554 (1976-08-01), Tipton

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